probe-scsi-all WWN Mapping Example (SPARC T4-4 With Four CPUs)

The SPARC T4-4 server has two REM cards plugged into the motherboard. These
modules are referred to as controllers 0 and 1. Each SAS controller is
connected to a separate four-slot disk backplane. The following table shows the PhyNum-to-disk
slot mapping for the two four-slot SPARC T4-4 backplanes.

This table shows that ports 0-3 of controller 0 are connected to backplane
slots 0-3 and ports 0-3 of controller 1 are connected to slots 4-7.

The following example is based on a SPARC T4-4 server with four CPUs
and eight hard drives. These hard drives are deployed as six individual storage
devices and a virtual drive that consists of two hard drives configured as
a RAID volume. Controllers 0 and 1 are attached to these storage devices
in the following manner:

Controller 0 is attached to Targets 9 and a (two individual storage devices).

Note - OBP uses a different device path for SAS controller 1 in SPARC T4-4
servers, depending on whether the server has four processors or two processors.The path
for SAS controller 0 is the same for both processor configurations.

Note - Target values are not static. The same storage device can appear in two
consecutive probe-scsi-all listings with different Target values.

The default boot device has the following values:

Controller = 0

Target = 9

PhyNum = 0

SASDeviceName = 5000cca00abcede0

SASAddress = 5000cca00abcede1

If you want to specify another drive to be the boot device, find
its PhyNum value in the output and use the SASDeviceName assigned to that
device. For example, if you want to use the hard drive in disk
slot 1, it has the following values: